social_custom_links.module

<?php

/**
 * @file
 * Contains social_custom_links.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\group\Entity\GroupInterface;
use Drupal\group\Entity\Group;
use Drupal\user\Entity\User;
use Drupal\profile\Entity\Profile;
use Drupal\Core\Url;
use Drupal\social_group\SocialGroupHelperService;
use Drupal\group\Entity\GroupContentType;

/**
 * Implements hook_help().
 */
function social_custom_links_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the social_custom_links module.
    case 'help.page.social_custom_links':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Open Social Custom Links') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_menu_local_tasks_alter().
 */
function social_custom_links_menu_local_tasks_alter(&$data, $route_name) {
  $remove_groups_link = TRUE;
  $remove_all_links = FALSE;
  $user = \Drupal::currentUser();
  //get group entity for current group
  $current_group = _social_custom_links_get_current_group();
  // Check if there is a group object on the frontpage route
  $frontpage_group = _social_custom_links_get_frontpage_group();

  if (!empty($current_group)) {
    $group_type = $current_group->getGroupType();
    $group_type_id = $group_type->id();
    // if user is admin or member of current group
    if ($user->id() == 1 || $user->hasPermission('manage all groups') || $current_group->getMember($user)) {
      if ($group_type_id == 'community') {
        $remove_groups_link = FALSE;
      }
    }
    // if not admin or member & not member of community
    elseif (!$frontpage_group->getMember($user)) {
      $remove_all_links = TRUE;
    }
  }

  if ($remove_groups_link) {
    unset($data['tabs'][0]['social_custom_links.subgroups']);
  }
  if ($remove_all_links) {
    unset($data['tabs'][0]);
  }
}

/**
 * Get current Group entity from the route.
 *
 * @return \Drupal\group\Entity\GroupInterface
 *   Returns the group object.
 */
function _social_custom_links_get_current_group($node = NULL) {
  $group = \Drupal::routeMatch()->getParameter('group');

  if (!is_object($group) && !is_null($group)) {
    $group = \Drupal::entityTypeManager()
      ->getStorage('group')
      ->load($group);
  }
  else {
    $node = is_object($node) ? $node : \Drupal::routeMatch()->getParameter('node');
    if (is_object($node) && !is_null($node)) {
      $node_entity = [
        'target_type' => 'node',
        'target_id' => $node->id(),
      ];
      $gid_from_entity = SocialGroupHelperService::getGroupFromEntity($node_entity);
      if ($gid_from_entity !== NULL) {
        $group = \Drupal::entityTypeManager()
          ->getStorage('group')
          ->load($gid_from_entity);
      }
    }
  }

  return $group;
}

/**
 * Get frontpage Group entity from the frontpage route.
 *
 * @return \Drupal\group\Entity\GroupInterface
 *   Returns the group object.
 */
function _social_custom_links_get_frontpage_group() {
  //Get Node Id for Front Page
  $frontpagepath = \Drupal::config('system.site')->get('page.front');
  $alias = \Drupal::service('path.alias_manager')->getPathByAlias($frontpagepath);
  $params = Url::fromUri("internal:" . $alias)->getRouteParameters();
  $entity_type = key($params);

  // Do nothing if node on front page is not group
  if ($entity_type == 'group') {
    $group = \Drupal::entityTypeManager()->getStorage($entity_type)->load($params[$entity_type]);
  }

  return $group;
}

/**
 * Get user entity from the current route.
 *
 * @return \Drupal\user\Entity\User
 *   Returns the user object.
 */
function _social_custom_links_get_user_from_current_route() {
  // Get the current route name for the checks being performed below
  $user = NULL;

  //Get Node Id for Front Page
  $current_path = \Drupal::service('path.current')->getPath();
  $alias = \Drupal::service('path.alias_manager')->getPathByAlias($current_path);
  $params = Url::fromUri("internal:" . $alias)->getRouteParameters();
  $entity_type = key($params);

  // If node on current page is user
  if ($entity_type == 'user') {
    $user = \Drupal::entityTypeManager()->getStorage($entity_type)->load($params[$entity_type]);
  }

  // If node on current page is profile
  if ($entity_type == 'profile') {
    $profile = \Drupal::entityTypeManager()->getStorage($entity_type)->load($params[$entity_type]);
    $user = $profile->getOwner();
  }

  return $user;
}

/**
 * Get all group memberships for a certain user.
 */
function _social_custom_links_get_all_group_members($uid) {
  $group_content_types = GroupContentType::loadByEntityTypeId('user');
  $group_content_types = array_keys($group_content_types);

  $query = \Drupal::database()->select('group_content_field_data', 'gcfd');
  $query->addField('gcfd', 'gid');
  $query->condition('gcfd.entity_id', $uid);
  $query->condition('gcfd.type', $group_content_types, 'IN');
  $query->execute()->fetchAll();

  $group_ids = $query->execute()->fetchAllAssoc('gid');
  return array_keys($group_ids);
}

/**
 * Implements hook_preprocess_block().
 */
function social_custom_links_preprocess_block(&$variables) {
  /** @var \Drupal\user\Entity\User $account */
  $account = \Drupal::routeMatch()->getParameter('user');
  /** @var \Drupal\group\Entity\Group $group */
  $group = \Drupal::routeMatch()->getParameter('group');

  if (is_numeric($account)) {
    $account = User::load($account);
  }

  if (is_numeric($group)) {
    $group = Group::load($group);
  }

  if (!empty($variables['elements']['content']['#view'])) {
    $view = $variables['elements']['content']['#view'];

    if (!empty($view->getDisplay())) {
      $link = $view->getDisplay();

      if (!empty($link->useMoreText())) {
        $more_link = $link->useMoreText();
      }
    }
  }
  // Add variables to sidebar blocks.
  switch ($variables['elements']['#derivative_plugin_id']) {

    case 'domain_groups-block_domain_groups':
      $variables['subtitle'] = t('in the group');
      $variables['view_all_path'] = Url::fromRoute('view.domain_groups.page_domain_groups', [
        'group' => $group->id(),
      ]);
      $variables['button_text'] = $more_link;
      $link->setOption('use_more', FALSE);
      break;
  }
}